163506133 has 8 divisors (see below), whose sum is σ = 187197120. Its totient is φ = 139898400.

The previous prime is 163506131. The next prime is 163506137. The reversal of 163506133 is 331605361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 163506133 - 2¹ = 163506131 is a prime.

It is a super-2 number, since 2×163506133² = 53468511057227378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163506131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16543 + ... + 24508.

It is an arithmetic number, because the mean of its divisors is an integer number (23399640).

Almost surely, 2^163506133 is an apocalyptic number.

It is an amenable number.

163506133 is a deficient number, since it is larger than the sum of its proper divisors (23690987).

163506133 is an equidigital number, since it uses as much as digits as its factorization.

163506133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41627.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 163506133 is about 12786.9516695732. The cubic root of 163506133 is about 546.8203675405.

The spelling of 163506133 in words is "one hundred sixty-three million, five hundred six thousand, one hundred thirty-three".